How many times faster does hydrogen effuse than neon

Which is the best hypothesis to use for this investigation?

Draw the product for the following addition reaction.

Which is more reasonable? Length of a automobile 5 m or 50 m?

B. based on your research and observations, why do you think pure (distilled) water does not conduct electricity but tap water usually does?

Is the freezing of mercury a reversible or irreversible physical change?

A sample of C3H8 has 4.64 * 1024 H atoms. How many carbon atoms does the sample contain?

What is the value of 200c on a Kelvin scale

Calculate the moles of new H₂ O₂ using the balanced formula below and the average moles of KMnO₄ from calculation #2. The average moles of KMnO₄ is 0.90mol. 2KMnO₄ + 5H₂O₂ + 3H₂SO₄ → K₂SO₄ + 2MnSO₄ + 8H₂O + 5O₂ Edit: I got 2.

How many grams of CaC2 would make 23.6g C2H2?

Shane performed the following trials in an experiment. Trial 1: Heat 30.0 grams of water at 0 °C to a final temperature of 40.0 °C. Trial 2: Heat 40.0 grams of water at 10.0 °C to a final temperature of 40.0 °C.